Kristine Yaffe Browse All Authors Famous Quotes by Kristine Yaffe This is a new field and there is a lot we don’t know about it, it’s prudent to be careful, but we also don’t want to jump to conclusions. So this study is somewhat reassuring. Kristine Yaffe health-news It does say - on average - participation in football doesn't carry deleterious cognitive outcomes later in life. Kristine Yaffe health-news